Los Angeles sectional · LAX basin
The LA sectional, pulled apart
This is the Los Angeles area from the Part 107 chart study supplement, the same excerpt the knowledge test uses. Lift it into 3D to see the LAX Class B shelves and the Class C and D airspace around them, then drop a drone anywhere to check what you need before you fly.
For study only. Not for navigation. Airspace was traced from a 2022 chart image, and ground elevations are modelled to within about 200 ft. Check the current chart, NOTAMs and a LAANC app before every flight.
Layers
Chart Lab · knowledge test excerpts
Read the chart the test uses
These are sectional excerpts from the FAA Airman Knowledge Testing Supplement, the book you get on test day. Tap a numbered marker to see what is there and what it means for your drone. Turn on quiz mode to test yourself first.
Answers were read from the 2022 testing supplement excerpts. Practice questions are written for this app, not copied from the test.
Weather and load factor · test supplement Figs 2, 12 and 15
Decode it, then decide
Paste a METAR or TAF to see what every group means and whether the weather allows a Part 107 flight. The load factor chart shows why steep turns make any aircraft heavier.
Sample reports are from the FAA testing supplement. For real flights, get current weather from an approved source.
METAR / TAF decoder
Tap a sample or paste your own. Tap any group to highlight its meaning.
Load factor
In a level, coordinated turn, load factor = 1 ÷ cos(bank). Stall speed rises with the square root of the load factor.
| Bank | Load factor (Fig 2) |
|---|
For drones: a multirotor holding altitude in a steep, fast turn needs more thrust for the same reason, so it drains its battery faster and has less margin in wind.
Airport ops · Chart Supplement, runways and signs
Know the airport before you fly near it
The test asks you to read a Chart Supplement entry, work out which runway is in use from the wind, and know where crewed traffic will be. Practice all three here.
Entries are from the 2022 testing supplement (Figs 77, 79, 81). Always check the current Chart Supplement before flying near an airport.
Chart Supplement
Tap any part of the entry to see what it means.
Practice
Wind, runways and the pattern
Runway numbers are the magnetic heading divided by 10. Aircraft take off and land into the wind, so the wind tells you which runway is active and where the traffic pattern is.
| Runway | Headwind | Crosswind |
|---|
Airport signs
From Fig 65. Red signs are mandatory. Black signs with yellow text tell you where you are. Yellow signs with black text point where to go. Turn on quiz mode and tap a sign to reveal it.
Chart key · from the sectional legend
Every symbol, decoded
This follows the legend in the chart study supplement, section by section. Each symbol is drawn the way it appears on the sectional, with a note on what it means for a Part 107 flight where it matters. The knowledge test asks you to read this legend.